When a heroic teacher talks about his disabled son, the entire class is moved to tears.

When a heroic teacher talks about his disabled son, the entire class is moved to tears.

Every now and then, we get a teacher who doesn’t just connect with us — they make us a better person in the world. Jeffrey Wright of Louisville, Ky. is one of those teachers.

He uses wacky experiments to teach high school kids about science and the universe. But it’s his own personal story about his relationship with his disabled son that shows his students the true meaning of life at 4:40…